31303102057 has 2 divisors, whose sum is σ = 31303102058. Its totient is φ = 31303102056.

The previous prime is 31303102007. The next prime is 31303102069. The reversal of 31303102057 is 75020130313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17864728281 + 13438373776 = 133659^2 + 115924^2 .

It is an emirp because it is prime and its reverse (75020130313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31303102057 - 2¹¹ = 31303100009 is a prime.

It is not a weakly prime, because it can be changed into another prime (31303102007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651551028 + 15651551029.

It is an arithmetic number, because the mean of its divisors is an integer number (15651551029).

Almost surely, 2^31303102057 is an apocalyptic number.

It is an amenable number.

31303102057 is a deficient number, since it is larger than the sum of its proper divisors (1).

31303102057 is an equidigital number, since it uses as much as digits as its factorization.

31303102057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 25.

The spelling of 31303102057 in words is "thirty-one billion, three hundred three million, one hundred two thousand, fifty-seven".